Tried most sites , but I also caanot find any marriage, as Kinvig fairly rare name it should be easy .
Do you know wife's Trimming first name ?
It seems the Trimming name has been around Farnham for a long time at least back to the 1600's.
There are a few variations like Trimmings/Trimmin/Trimmins etc , but the Farnham lot seem to stick with Trimmings

Cheers
David